# -*- coding: utf-8 -*-
"""
Created on Tue Sep  5 20:01:28 2017

@author: Administrator
"""

import numpy as np
import matplotlib.pyplot as plt

x=np.random.randn(1000)

y=x+np.random.randn(1000)*0.5

plt.scatter(x,y,s=5,marker='<')# s表示面积，marker表示图形

plt.show()